oj.uz

Submission #128726

# Submission time Handle Problem Language Result Execution time Memory
128726 2019-07-11T08:41:02 Z SamAnd Railway (BOI17_railway) C++17
100 / 100
 315 ms 46660 KB 
#include <bits/stdc++.h>
using namespace std;
const int N = 100005;

int n, m, k;
vector<int> a[N];
vector<int> t[N];
vector<int> b[N];

int u[N];
int q[N];
map<int, int> mp[N];

vector<int> ans;
void dfs(int x, int p, int ki)
{
    for (int i = 0; i < b[x].size(); ++i)
    {
        int y = b[x][i];
        mp[x][y]++;
        if (mp[x][y] == u[y])
            ++q[x];
    }
    for (int i = 0; i < a[x].size(); ++i)
    {
        int h = a[x][i];
        if (h == p)
            continue;
        dfs(h, x, t[x][i]);
        if (mp[h].size() > mp[x].size())
        {
            swap(mp[h], mp[x]);
            swap(q[h], q[x]);
        }
        for (map<int, int>::iterator it = mp[h].begin(); it != mp[h].end(); ++it)
        {
            int y = it->first;
            int qq = it->second;
            mp[x][y] += qq;
            if (mp[x][y] == u[y])
                ++q[x];
        }
    }
    if (mp[x].size() - q[x] >= k)
        ans.push_back(ki);
}

int main()
{
    scanf("%d%d%d", &n, &m, &k);
    for (int i = 1; i <= n - 1; ++i)
    {
        int x, y;
        scanf("%d%d", &x, &y);
        a[x].push_back(y);
        a[y].push_back(x);
        t[x].push_back(i);
        t[y].push_back(i);
    }
    for (int i = 1; i <= m; ++i)
    {
        int s;
        scanf("%d", &s);
        u[i] = s;
        while (s--)
        {
            int x;
            scanf("%d", &x);
            b[x].push_back(i);
        }
    }
    dfs(1, 1, 0);
    sort(ans.begin(), ans.end());
    cout << ans.size() << endl;
    for (int i = 0; i < ans.size(); ++i)
        cout << ans[i] << ' ';
    cout << endl;
    return 0;
}

Compilation message

railway.cpp: In function 'void dfs(int, int, int)':
railway.cpp:17:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < b[x].size(); ++i)
                     ~~^~~~~~~~~~~~~
railway.cpp:24:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < a[x].size(); ++i)
                     ~~^~~~~~~~~~~~~
railway.cpp:44:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (mp[x].size() - q[x] >= k)
         ~~~~~~~~~~~~~~~~~~~~^~~~
railway.cpp: In function 'int main()':
railway.cpp:75:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < ans.size(); ++i)
                     ~~^~~~~~~~~~~~
railway.cpp:50:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d", &n, &m, &k);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
railway.cpp:54:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &x, &y);
         ~~~~~^~~~~~~~~~~~~~~~
railway.cpp:63:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &s);
         ~~~~~^~~~~~~~~~
railway.cpp:68:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &x);
             ~~~~~^~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12152 KB Output is correct
2 Correct 20 ms 13048 KB Output is correct
3 Correct 20 ms 13048 KB Output is correct
4 Correct 12 ms 12152 KB Output is correct
5 Correct 12 ms 12152 KB Output is correct
6 Correct 21 ms 13816 KB Output is correct
7 Correct 21 ms 13176 KB Output is correct
8 Correct 18 ms 13176 KB Output is correct
9 Correct 19 ms 13176 KB Output is correct
10 Correct 12 ms 12152 KB Output is correct
11 Correct 12 ms 12152 KB Output is correct
12 Correct 12 ms 12024 KB Output is correct
13 Correct 12 ms 11996 KB Output is correct
14 Correct 12 ms 12024 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12152 KB Output is correct
2 Correct 20 ms 13048 KB Output is correct
3 Correct 20 ms 13048 KB Output is correct
4 Correct 12 ms 12152 KB Output is correct
5 Correct 12 ms 12152 KB Output is correct
6 Correct 21 ms 13816 KB Output is correct
7 Correct 21 ms 13176 KB Output is correct
8 Correct 18 ms 13176 KB Output is correct
9 Correct 19 ms 13176 KB Output is correct
10 Correct 12 ms 12152 KB Output is correct
11 Correct 12 ms 12152 KB Output is correct
12 Correct 12 ms 12024 KB Output is correct
13 Correct 12 ms 11996 KB Output is correct
14 Correct 12 ms 12024 KB Output is correct
15 Correct 68 ms 19420 KB Output is correct
16 Correct 68 ms 19448 KB Output is correct
17 Correct 69 ms 19512 KB Output is correct
18 Correct 28 ms 13944 KB Output is correct
19 Correct 20 ms 13176 KB Output is correct
20 Correct 77 ms 18932 KB Output is correct
21 Correct 78 ms 18808 KB Output is correct
22 Correct 13 ms 12024 KB Output is correct
23 Correct 24 ms 13048 KB Output is correct
24 Correct 24 ms 13048 KB Output is correct
25 Correct 13 ms 12072 KB Output is correct
26 Correct 12 ms 12152 KB Output is correct
27 Correct 20 ms 13816 KB Output is correct
28 Correct 19 ms 13176 KB Output is correct
29 Correct 18 ms 13048 KB Output is correct
30 Correct 20 ms 13176 KB Output is correct
31 Correct 12 ms 12152 KB Output is correct
32 Correct 12 ms 12024 KB Output is correct
33 Correct 12 ms 12152 KB Output is correct
34 Correct 12 ms 12024 KB Output is correct
35 Correct 13 ms 12152 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 193 ms 46192 KB Output is correct
2 Correct 13 ms 12152 KB Output is correct
3 Correct 195 ms 45940 KB Output is correct
4 Correct 184 ms 45448 KB Output is correct
5 Correct 163 ms 44016 KB Output is correct
6 Correct 172 ms 46448 KB Output is correct

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 196 ms 36636 KB Output is correct
2 Correct 196 ms 32632 KB Output is correct
3 Correct 231 ms 37256 KB Output is correct
4 Correct 235 ms 36964 KB Output is correct
5 Correct 233 ms 37496 KB Output is correct
6 Correct 180 ms 36728 KB Output is correct
7 Correct 176 ms 36600 KB Output is correct

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 196 ms 36636 KB Output is correct
2 Correct 196 ms 32632 KB Output is correct
3 Correct 231 ms 37256 KB Output is correct
4 Correct 235 ms 36964 KB Output is correct
5 Correct 233 ms 37496 KB Output is correct
6 Correct 180 ms 36728 KB Output is correct
7 Correct 176 ms 36600 KB Output is correct
8 Correct 176 ms 36584 KB Output is correct
9 Correct 171 ms 36436 KB Output is correct
10 Correct 151 ms 43760 KB Output is correct
11 Correct 149 ms 43716 KB Output is correct
12 Correct 127 ms 27316 KB Output is correct
13 Correct 117 ms 27260 KB Output is correct
14 Correct 194 ms 31992 KB Output is correct
15 Correct 198 ms 32272 KB Output is correct
16 Correct 251 ms 38136 KB Output is correct
17 Correct 249 ms 38392 KB Output is correct
18 Correct 229 ms 36180 KB Output is correct
19 Correct 206 ms 33528 KB Output is correct
20 Correct 185 ms 36956 KB Output is correct
21 Correct 181 ms 36988 KB Output is correct
22 Correct 179 ms 37112 KB Output is correct

Subtask #6
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12152 KB Output is correct
2 Correct 20 ms 13048 KB Output is correct
3 Correct 20 ms 13048 KB Output is correct
4 Correct 12 ms 12152 KB Output is correct
5 Correct 12 ms 12152 KB Output is correct
6 Correct 21 ms 13816 KB Output is correct
7 Correct 21 ms 13176 KB Output is correct
8 Correct 18 ms 13176 KB Output is correct
9 Correct 19 ms 13176 KB Output is correct
10 Correct 12 ms 12152 KB Output is correct
11 Correct 12 ms 12152 KB Output is correct
12 Correct 12 ms 12024 KB Output is correct
13 Correct 12 ms 11996 KB Output is correct
14 Correct 12 ms 12024 KB Output is correct
15 Correct 68 ms 19420 KB Output is correct
16 Correct 68 ms 19448 KB Output is correct
17 Correct 69 ms 19512 KB Output is correct
18 Correct 28 ms 13944 KB Output is correct
19 Correct 20 ms 13176 KB Output is correct
20 Correct 77 ms 18932 KB Output is correct
21 Correct 78 ms 18808 KB Output is correct
22 Correct 13 ms 12024 KB Output is correct
23 Correct 24 ms 13048 KB Output is correct
24 Correct 24 ms 13048 KB Output is correct
25 Correct 13 ms 12072 KB Output is correct
26 Correct 12 ms 12152 KB Output is correct
27 Correct 20 ms 13816 KB Output is correct
28 Correct 19 ms 13176 KB Output is correct
29 Correct 18 ms 13048 KB Output is correct
30 Correct 20 ms 13176 KB Output is correct
31 Correct 12 ms 12152 KB Output is correct
32 Correct 12 ms 12024 KB Output is correct
33 Correct 12 ms 12152 KB Output is correct
34 Correct 12 ms 12024 KB Output is correct
35 Correct 13 ms 12152 KB Output is correct
36 Correct 193 ms 46192 KB Output is correct
37 Correct 13 ms 12152 KB Output is correct
38 Correct 195 ms 45940 KB Output is correct
39 Correct 184 ms 45448 KB Output is correct
40 Correct 163 ms 44016 KB Output is correct
41 Correct 172 ms 46448 KB Output is correct
42 Correct 196 ms 36636 KB Output is correct
43 Correct 196 ms 32632 KB Output is correct
44 Correct 231 ms 37256 KB Output is correct
45 Correct 235 ms 36964 KB Output is correct
46 Correct 233 ms 37496 KB Output is correct
47 Correct 180 ms 36728 KB Output is correct
48 Correct 176 ms 36600 KB Output is correct
49 Correct 176 ms 36584 KB Output is correct
50 Correct 171 ms 36436 KB Output is correct
51 Correct 151 ms 43760 KB Output is correct
52 Correct 149 ms 43716 KB Output is correct
53 Correct 127 ms 27316 KB Output is correct
54 Correct 117 ms 27260 KB Output is correct
55 Correct 194 ms 31992 KB Output is correct
56 Correct 198 ms 32272 KB Output is correct
57 Correct 251 ms 38136 KB Output is correct
58 Correct 249 ms 38392 KB Output is correct
59 Correct 229 ms 36180 KB Output is correct
60 Correct 206 ms 33528 KB Output is correct
61 Correct 185 ms 36956 KB Output is correct
62 Correct 181 ms 36988 KB Output is correct
63 Correct 179 ms 37112 KB Output is correct
64 Correct 189 ms 37432 KB Output is correct
65 Correct 315 ms 46660 KB Output is correct
66 Correct 278 ms 40592 KB Output is correct
67 Correct 224 ms 36088 KB Output is correct
68 Correct 131 ms 25112 KB Output is correct
69 Correct 128 ms 25208 KB Output is correct
70 Correct 187 ms 38084 KB Output is correct
71 Correct 176 ms 36344 KB Output is correct
72 Correct 12 ms 12152 KB Output is correct
73 Correct 19 ms 13048 KB Output is correct
74 Correct 20 ms 13052 KB Output is correct
75 Correct 12 ms 12024 KB Output is correct
76 Correct 13 ms 12152 KB Output is correct
77 Correct 21 ms 13816 KB Output is correct
78 Correct 23 ms 13176 KB Output is correct
79 Correct 23 ms 13176 KB Output is correct
80 Correct 22 ms 13176 KB Output is correct
81 Correct 12 ms 12024 KB Output is correct
82 Correct 12 ms 12024 KB Output is correct
83 Correct 12 ms 12152 KB Output is correct
84 Correct 12 ms 12024 KB Output is correct
85 Correct 12 ms 12024 KB Output is correct
86 Correct 69 ms 19412 KB Output is correct
87 Correct 69 ms 19448 KB Output is correct
88 Correct 70 ms 19440 KB Output is correct
89 Correct 22 ms 14072 KB Output is correct
90 Correct 20 ms 13176 KB Output is correct
91 Correct 70 ms 18808 KB Output is correct
92 Correct 69 ms 18936 KB Output is correct
93 Correct 13 ms 12152 KB Output is correct
94 Correct 198 ms 46188 KB Output is correct
95 Correct 193 ms 45916 KB Output is correct
96 Correct 189 ms 45436 KB Output is correct
97 Correct 167 ms 43956 KB Output is correct
98 Correct 190 ms 46412 KB Output is correct
99 Correct 290 ms 40724 KB Output is correct
100 Correct 304 ms 37880 KB Output is correct
101 Correct 249 ms 38236 KB Output is correct
102 Correct 198 ms 33192 KB Output is correct
103 Correct 178 ms 36728 KB Output is correct
104 Correct 181 ms 36980 KB Output is correct
105 Correct 180 ms 36672 KB Output is correct
106 Correct 177 ms 36472 KB Output is correct
107 Correct 168 ms 36476 KB Output is correct
108 Correct 147 ms 43760 KB Output is correct
109 Correct 147 ms 43724 KB Output is correct
110 Correct 126 ms 27228 KB Output is correct
111 Correct 136 ms 27384 KB Output is correct
112 Correct 191 ms 31864 KB Output is correct
113 Correct 217 ms 31924 KB Output is correct